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<p class="MsoNormal">I resolved all of the routing issues. Only issue I’ve got now is nat_keepalive not working when used with set/add_contact_alias().<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">-dan<o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">"miconda@gmail.com" <miconda@gmail.com><br>
<b>Reply-To: </b>"miconda@gmail.com" <miconda@gmail.com><br>
<b>Date: </b>Friday, April 3, 2020 at 1:43 PM<br>
<b>To: </b>Daniel Graham <dan@cmsinter.net>, "Kamailio (SER) - Users Mailing List" <sr-users@lists.kamailio.org><br>
<b>Subject: </b>Re: [SR-Users] nathelper without usrloc<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p>Somehow I thought that the keepalive is not working and you look for fixing it. Now I read the full thread and actually the routing of requests within dialog doesn't work.<o:p></o:p></p>
<p>Can you send a pcap with such a call taken on Kamailio system? ACK and BYE should be routed based on Contact of INVITE/200ok and record-route headers, no longer related to REGISTER (only initial INVITE should rely on registration data).<o:p></o:p></p>
<p>Cheers,<br>
Daniel<o:p></o:p></p>
<div>
<p class="MsoNormal">On 02.04.20 22:11, Daniel W. Graham wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Same behavior with add_contact_alias()<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<p class="MsoNormal">-dan<o:p></o:p></p>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black"><a href="mailto:miconda@gmail.com">"miconda@gmail.com"</a>
<a href="mailto:miconda@gmail.com"><miconda@gmail.com></a><br>
<b>Reply-To: </b><a href="mailto:miconda@gmail.com">"miconda@gmail.com"</a> <a href="mailto:miconda@gmail.com">
<miconda@gmail.com></a><br>
<b>Date: </b>Thursday, April 2, 2020 at 2:59 PM<br>
<b>To: </b>"Kamailio (SER) - Users Mailing List" <a href="mailto:sr-users@lists.kamailio.org">
<sr-users@lists.kamailio.org></a>, Daniel Graham <a href="mailto:dan@cmsinter.net">
<dan@cmsinter.net></a><br>
<b>Subject: </b>Re: [SR-Users] nathelper without usrloc</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<p>Hello,<o:p></o:p></p>
<p>can you try with add_contact_alias() instead of set_contact_alias()? The second one updates the contact URI in a way that is visible for the couple of local modules immediately, typically needed when having dialog/presence module in that instance (still
no changes to the header itself, it uses some internal mechanism to signal contact value should be taken from a special field). The first one uses the lumps system that makes the changes over the contact URI not visible immediately (unless msg_apply_changes()
is used).<o:p></o:p></p>
<p>Maybe nat_keepalive() needs the original contact URI, not the one updated by set_contact_alias().<o:p></o:p></p>
<p>Cheers,<br>
Daniel<o:p></o:p></p>
<div>
<p class="MsoNormal">On 02.04.20 18:45, Daniel W. Graham wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">I was able to fix all issues, but have one partially lingering.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">For register only, if I apply: set_contact_alias() with nat_keepalive(), keepalives are not sent. Removing set_contact_alias() fixes this.
<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I *shouldn’t need this if the pbx was saving received and rport params as a result of add_path_received().<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Can anyone explain why these two functions conflict?<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Test scenario -<o:p></o:p></p>
<p class="MsoNormal"># Doesn’t result in register keepalive –<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">route[NATDETECT] {<o:p></o:p></p>
<p class="MsoNormal"> force_rport();<br>
set_contact_alias(); # removal of this enables keepalive<br>
nat_keepalive();<br>
return;<br>
}<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I’ve tested this with and without calls to handle_ruri_alias() elsewhere in cfg script with same result.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">-dan<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">sr-users
<a href="mailto:sr-users-bounces@lists.kamailio.org"><sr-users-bounces@lists.kamailio.org></a> on behalf of Sergiu Pojoga
<a href="mailto:pojogas@gmail.com"><pojogas@gmail.com></a><br>
<b>Reply-To: </b>"Kamailio (SER) - Users Mailing List" <a href="mailto:sr-users@lists.kamailio.org">
<sr-users@lists.kamailio.org></a><br>
<b>Date: </b>Wednesday, April 1, 2020 at 8:58 AM<br>
<b>To: </b>"Kamailio (SER) - Users Mailing List" <a href="mailto:sr-users@lists.kamailio.org">
<sr-users@lists.kamailio.org></a><br>
<b>Subject: </b>Re: [SR-Users] nathelper without usrloc</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Nothing else comes to mind based on info provided. May be you can send some sip traffic captures and elaborate?
<o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Regards,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">--Sergiu <o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<div>
<p class="MsoNormal">On Tue, Mar 31, 2020 at 10:29 PM Daniel W. Graham <<a href="mailto:dan@cmsinter.net">dan@cmsinter.net</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">Thanks, yeah I had already changed that, but registration works with either. I’m not asking for a solution, just looking for suggestions on anything that needs attention, so I appreciate your pointers.
<o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">-dan<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal">On Mar 31, 2020, at 8:55 PM, Sergiu Pojoga <<a href="mailto:pojogas@gmail.com" target="_blank">pojogas@gmail.com</a>> wrote:<o:p></o:p></p>
</div>
</div>
<div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"> <o:p></o:p></p>
</blockquote>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal">Oh and almost forgot - try <b>add_path_received()</b> instead of add_path()<o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Good luck!<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<div>
<p class="MsoNormal">On Tue, Mar 31, 2020 at 8:48 PM Sergiu Pojoga <<a href="mailto:pojogas@gmail.com" target="_blank">pojogas@gmail.com</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">A lot of things may not be 'right' here, unfortunately your question is too broad to answer and too little info, the topology is indeed non-default and I doubt someone will present you with a final solution (there's business support, if
you're looking for that). <o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Otherwise, if I were to just throw a guess: <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">- try fix_nated_register() (instead of set_contact_alias) just for Register method on the way to the registrar<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">- in the Registrar, make sure the Contact's Path address is correct<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">--Sergiu<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<div>
<p class="MsoNormal">On Tue, Mar 31, 2020 at 7:34 PM Daniel W. Graham <<a href="mailto:dan@cmsinter.net" target="_blank">dan@cmsinter.net</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<p class="MsoNormal">It did help, I read that a couple times already but something is still not right, and its only because of the decoupling of the registrar. I need to do more debugging and see if Im loosing the flag value. Hoping something sticks out that
someone sees and can point me in the right direction. <br>
<br>
-dan<br>
<br>
On Mar 31, 2020, at 7:15 PM, Alex Balashov <<a href="mailto:abalashov@evaristesys.com" target="_blank">abalashov@evaristesys.com</a>> wrote:<br>
> <br>
> Daniel,<br>
> <br>
> Might this article be of aid?<br>
> <br>
> <a href="http://www.evaristesys.com/blog/server-side-nat-traversal-with-kamailio-the-definitive-guide/" target="_blank">
http://www.evaristesys.com/blog/server-side-nat-traversal-with-kamailio-the-definitive-guide/</a><br>
> <br>
> -- Alex<br>
> <br>
>> On Tue, Mar 31, 2020 at 11:12:23PM +0000, Daniel W. Graham wrote:<br>
>> <br>
>> It does but doesn't work as well as kamailio, and since the proxy is the entry point.<br>
>> <br>
>> The biggest issue here isnt the keepalive, as I did have that working. The main issue is the routing of messages, utilizing set_contact_alias and handle_ruri_alias, as Ive been unable to get ack and bye messages to make it past the proxy. I’m assuming these
functions are not being used at the right locations or I need to rely on another mechanism to accomplish it. I also question my use of the PBX flag and the natmanage logic.<br>
>> <br>
>> -dan<br>
>> <br>
>> On Mar 31, 2020, at 7:01 PM, Sergiu Pojoga <<a href="mailto:pojogas@gmail.com" target="_blank">pojogas@gmail.com</a>> wrote:<br>
>> <br>
>> <br>
>> Hi Daniel,<br>
>> <br>
>> From what you are describing, my understanding is that the Registrar is the PBX, kamailio is acting as an edge proxy. If so, doesn't the PBX/registrar have NAT traversal/keepalive mechanisms of its own?<br>
>> <br>
>> Regards,<br>
>> --Sergiu<br>
>> <br>
>> On Tue, Mar 31, 2020 at 1:55 PM Daniel W. Graham <<a href="mailto:dan@cmsinter.net" target="_blank">dan@cmsinter.net</a><mailto:<a href="mailto:dan@cmsinter.net" target="_blank">dan@cmsinter.net</a>>> wrote:<br>
>> I’ve been missing with this for a while and seem to be missing something. Any suggestions on what is missing here?<br>
>> <br>
>> Trying to use set_contact_alias() and handle_ruri_alias() from nathelper module and nat_keepalive from nat_traversal module, without registrar.<br>
>> <br>
>> I had register keepalive working, that has since broke. When register keepalive was working, I was able to place call in either direction but ACK and BYE was not being routed past kamailio.<br>
>> <br>
>> Registrations are forwarded to the PBX using add_path() and is working.<br>
>> <br>
>> Also not included below is the routing to the PBX, that is just setting $du and t_relay, and is also working.<br>
>> <br>
>> Topology is: UA1 -> NAT -> kamailio -> PBX -> UA2<br>
>> <br>
>> Using default config file as the example, modified with above changes. I also removed RTP config as that is a non-issue.<br>
>> <br>
>> request_route {<br>
>> ……<br>
>> # FLAG MESSAGES FROM PBX<br>
>> setflag(FLT_PBX);<br>
>> route(NATDETECT);<br>
>> ……<br>
>> <br>
>> route[NATDETECT] {<br>
>> if (nat_uac_test("19")) {<br>
>> force_rport();<br>
>> set_contact_alias();<br>
>> nat_keepalive();<br>
>> }<br>
>> return;<br>
>> }<br>
>> <br>
>> route[WITHINDLG] {<br>
>> if (!has_totag()) return;<br>
>> if (loose_route()) {<br>
>> route(DLGURI);<br>
>> } else if ( is_method("ACK") ) {<br>
>> route(NATMANAGE);<br>
>> } else if ( is_method("NOTIFY") ) {<br>
>> record_route();<br>
>> }<br>
>> route(RELAY);<br>
>> exit;<br>
>> }<br>
>> <br>
>> if (is_method("SUBSCRIBE") && uri == myself) {<br>
>> route(PRESENCE);<br>
>> exit;<br>
>> }<br>
>> if ( is_method("ACK") ) {<br>
>> if ( t_check_trans() ) {<br>
>> route(RELAY);<br>
>> exit;<br>
>> } else {<br>
>> exit;<br>
>> }<br>
>> }<br>
>> sl_send_reply("404","Not here");<br>
>> exit;<br>
>> }<br>
>> <br>
>> route[NATMANAGE] {<br>
>> if(isflagset(FLT_PBX)) {<br>
>> handle_ruri_alias();<br>
>> }<br>
>> if(!isflagset(FLT_PBX)) {<br>
>> set_contact_alias();<br>
>> } return;<br>
>> }<br>
>> <br>
>> route[DLGURI] {<br>
>> if(!isdsturiset()) {<br>
>> handle_ruri_alias();<br>
>> }<br>
>> return;<br>
>> }<br>
>> <br>
>> branch_route[MANAGE_BRANCH] {<br>
>> route(NATMANAGE);<br>
>> }<br>
>> <br>
>> onreply_route[MANAGE_REPLY] {<br>
>> if(status=~"[12][0-9][0-9]") {<br>
>> route(NATMANAGE);<br>
>> }<br>
>> }<br>
>> failure_route[MANAGE_FAILURE] {<br>
>> route(NATMANAGE);<br>
>> <br>
>> if (t_is_canceled()) exit;<br>
>> <br>
>> <br>
>> -dan<br>
>> <br>
>> _______________________________________________<br>
>> Kamailio (SER) - Users Mailing List<br>
>> <a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><mailto:<a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a>><br>
>> <a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
>> _______________________________________________<br>
>> Kamailio (SER) - Users Mailing List<br>
>> <a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
>> <a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
> <br>
>> _______________________________________________<br>
>> Kamailio (SER) - Users Mailing List<br>
>> <a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
>> <a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
> <br>
> <br>
> -- <br>
> Alex Balashov | Principal | Evariste Systems LLC<br>
> <br>
> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)<br>
> Web: <a href="http://www.evaristesys.com/" target="_blank">http://www.evaristesys.com/</a>,
<a href="http://www.csrpswitch.com/" target="_blank">http://www.csrpswitch.com/</a><br>
> <br>
> _______________________________________________<br>
> Kamailio (SER) - Users Mailing List<br>
> <a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
> <a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
_______________________________________________<br>
Kamailio (SER) - Users Mailing List<br>
<a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
<a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></p>
</blockquote>
</div>
</blockquote>
</div>
<p class="MsoNormal">_______________________________________________<br>
Kamailio (SER) - Users Mailing List<br>
<a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
<a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></p>
</div>
</blockquote>
</div>
</div>
<p class="MsoNormal">_______________________________________________<br>
Kamailio (SER) - Users Mailing List<br>
<a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
<a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></p>
</blockquote>
</div>
<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Kamailio (SER) - Users Mailing List<o:p></o:p></pre>
<pre><a href="mailto:sr-users@lists.kamailio.org">sr-users@lists.kamailio.org</a><o:p></o:p></pre>
<pre><a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></pre>
</blockquote>
<pre>-- <o:p></o:p></pre>
<pre>Daniel-Constantin Mierla -- <a href="http://www.asipto.com">www.asipto.com</a><o:p></o:p></pre>
<pre><a href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a><o:p></o:p></pre>
</blockquote>
<pre>-- <o:p></o:p></pre>
<pre>Daniel-Constantin Mierla -- <a href="http://www.asipto.com">www.asipto.com</a><o:p></o:p></pre>
<pre><a href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a><o:p></o:p></pre>
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